In the continuing programme of overnight closures the A14 is closed westbound from junction 36 (the A11) as far as junction 32 Histon from tomorrow night (23/3) until Friday (27/3) from 8pm to 6am. So that means you won’t be able to get onto the A14 westbound at the Milton interchange (junction 33). Instead you’ll have to use either Butt Lane or Kings Hedges Road to get to junction 32.
Meanwhile the A14 eastbound is closed between junction 31 (Girton) and 32 (Histon) during the same period so if you’re coming home on the A14 at those times you’ll either have to come off earlier and make your way back through the northern villages or continue down to junction 12 on the M11 and come into Cambridge on Barton Road.