So I am 7 months pregnant 28 weeks to be exact and for the last week after my husband and I are intamate when I get up to use the restroom I get a sharp pain in my head and a lot of pressure along with seeing spots and super dizzy... should I call my ob? Is this normal? I'm really worried

Any time you have an important question about your health and that of your unborn baby, you should call your OB.