Hi,
How are you doing ? Few personal details like age/ weight, height, periods details, partner details would have been great.
Let me start by saying that Depo has effect which suppress ovulation, but after this long duration it should have worn off, but if periods are still not regular , you need to have hormone pills cyclically for 2-3 months ,one regular
pregnancy chances increases.
I can suggest a check list of investigations to diagnose a cause
Husband-
Semen analysis at least 2- done 4 weeks apart preferably in an
infertility center ( examination done by andrologist), Blood sugars
Wife - Blood Sugars,
Thyroid profile, Serum
Prolactin If age >35yrs- Serum AMH level
Ultrasound scans to evaluate
Uterus , Ovaries & adnexa
Confirm tubal patency- most important- Tube is the connection
between uterus & ovaries( the bridge where sperm meets the egg &
forms a baby) this is size of hair follicle & cannot be seen on scans.
So check with HSG( Xray with dye), or SSG ( Scan with dye) or
Laparoscopy
If all this done & found normal , nothing can stop a pregnancy with God's will
Hope I have cleared your query
All the best
Dr.Balakrishnan