Suffering from interstitialcystitis.7 weeks preggo. Sharp pulling pains in vagina worsen because of ic. Frequent urination. Will it harm the fetus.

No. Interstitial cystitis, in and of itself, will not harm the pregnancy. The hard part, during your pregnancy, will be telling the difference between ^ frequency of urination due to ic and that due to infection. Pregnant women are more susceptible to infection and ^ frequency is sometimes only way they can tell if they have infection. Speak with your doctor about issues, maybe increased survellience.