Difficulty conceiving my second

Gianine
After my husband had a vasectomy reversal I got pregnant after 3 months of ttc. My sweet baby girl is now 3 years old. I just turned 38 and my husband and I have been ttc for 8 months and nothing.  Could the reason be with the reversal or that I had a c section. I feel blessed to have my healthy happy girl I would love to have a second