Weight gain fear

So im 5 1 and at 14 weeks 4 days roughly weigh about 148.. I have gaines two pounds since becoming pregnant. My fear is that im gonna get really large! I was 150 lost down to 136 the gained most back before becoming pregnant. How do I deal with all the weight gain and cope with becoming super large. It took me months to lose those few pounds. That was with diet and excersize. ): wish I hadnt stopped my diet and gained back..