If you can afford the money for traditional wedding, nothing stops you from doing the two events same day. Go to the church in the morning and then use the reception for the traditional rites which by the way is done by just the two families. Chikina, everything is settled and done beautifully well. Nothing beats good planning. Do not try to impress anybody. The pregnancy is God's gift to you even though you should have waited till after marriage but nothing spoil, sha, afterall you have been together for 5 years. Cheers.