Exhaust badly blowing.. and maybe some blue-ish smoke out the exhaust

[new 1991 Starlet owner]

hi, Exhaust been blowing for a bit but recently got worse.. had some knackered coilies on the back before and they broke a weld line. anyways had it re welded at work and seemed to be fine for a bit. but started blowing again and the re-welded section seems to be fine.

also my mate said the other day he thought i was burning some oil.

was wondering if i could be cooking an exhaust gasket or something.

anyone else burn a little oil?

thanks, tom.