It is very common to experience increased skin sensitivity and irritation after shaving during pregnancy. Applying a cold compress or ice wrapped in a clean, soft cloth for 10 to 15 minutes is completely safe and will help soothe the itching. For safe topical relief, you can use plain calamine lotion or pure aloe vera gel. A mild, over-the-counter hydrocortisone 1% cream can also be applied sparingly for a few days to reduce inflammation. Since you are in your first trimester, it is always best to consult your OB/GYN before starting any new medicated creams. Wear loose cotton underwear to minimize friction and avoid scratching.