It seems that you may be having chelitis..inflammatory condition of lips. There may be dryness,fissures,oozing,secondary infection,pain and itching. Chelitis may be caused by many factors...cosmetics,lipstic,tooth paste,sun exposure, soap, internal diseases,vitamin deficiencies anaemia
..etc .You are pregnant, so you shoul avoid oral drugs. Apply combined cream of antibiotic and mild steroid
daily at night and apply vitamin E
and alovera cream in morning. Avoid soap,cosmetics and lipstic. Do not prick the the skin of lip. Have healthy food and proper sleep. Avoid worries and tension. You may feel better. Still, consult dermatologist
I hope you got my answer.
Dr. Ilyas Patel MD