A bit worried

Hello, 

for the past year or so I keep getting which I think is swollen glands on the groin area, they come and go. I could have 1 and then a month later I have none, they started of on the right side of my groin but more recently they’ve started to appear on the left side too some are hard and a little painful yet some are hard and very painful to touch. Over the past year I’ve noticed I always have one somewhere to n my groin and I’m just wondering weather this is normal? I’m 20 and I hardly ever get a period. When I first got got my period they were regular but years down the line I’ve went almost 3 years without a period. This may be nothing to do with the lumps but because it’s in the same area I thought I’d mention. If anyone has any idea of what it could be it would be great to hear back from you. Thank you!