I would suggest making an appointment with a pediatrician that specializes in developmental delays. You can also contact your local Early Childhood Intervention (ECI) center.
There is really no need to wait. Better safe than sorry. If there is an issue, you can treat it now. If not, no harm done. Go to this link (Harris County?):
www.dars.state.tx.us/ecis/referral.shtml
Here is some info from the link:
ECI encourages families not to take a "wait and see" approach to a child's development. A referral to ECI can be based on professional judgment or a family's concern. A medical diagnosis or a confirmed developmental delay is not needed to refer. As soon as a delay is suspected, children may be referred to ECI, even as early as birth.

To refer a child, from birth to three, call the DARS Inquiries Line at 1-800-628-5115 or send an email message to dars.inquiries@dars.state.tx.us. For the hearing impaired call, TDD/TTY 1-866-581-9328.

ECI Care Line operators provide callers with the name of a local program which works under the ECI umbrella. In addition to giving callers information about referrals and local ECI programs, operators also: provide general information about ECI; help families locate information about disabilities; provide referral information to early intervention programs in other states; and take publication orders.

Once a referral is made to an ECI program, the family is contacted by an ECI staff person to discuss the reasons for the referral. Usually an intake appointment is made so that the family's concerns can be further explored and a more in-depth explanation of ECI services can be provided. After the intake appointment, a decision is made about whether to proceed with an interdisciplinary evaluation and assessment.